Machine for roughing wood spools, cores, &amp;c.



No. 811,281. PATENTED JAN. 30, 1906.

H. J. DUNCAN. MACHINE FOR ROUGHING WOOD SPOOLS, OORBS, 8w.

APPLICATION FILED JAN. 31, 1905.

3 SHEETS-SHEET 1.

auuavmfoz Q/ml nmou I V L/ PATENTED JAN. 30, 1906.

APPLICATION FILED JAN. 31, 1905.

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Walkman: 92 a No. 811.281. PATENTED JAN. 30, 1906. H. J. DUNCAN. MACHINE FOR ROUGHING WOOD SPOOLS, GORES, 6w.

APPLICATION FILED JAN. 31, 1905.

3 SHEETSSHBET 3.

Washes,

HENRY J. DUNCAN, OF ALPENA, MICHIGAN.

WlACHlNE FOR HOUGHING WOOD SPOOLS, CORES, &.c.

Specification of Letters Patent.

Patented Jan. 30, 1906.

Application filed January 31, 1905. Serial No. 243,487. 7

To all whom it may concern: 1

Be it known that I, HENRY J. DUNCAN, a citizen of the United States, residing at Alpena, in, the county of Alpena and State of Michigan, have invented new and uesful Improvements in Machines for Roughing Wood Spools, Cores, and the Like, of which the following is a specification.

My invention pertains to machines for making wood spools, cores, and other devices which are circular in cross-section and have longitudinal central bores; and it has for its object to provide a reliable machine for roughing Wood blocks into circular form in cross-section and providing the same with I longitudinal central bores in one and the same operation and one in which the blocks are automatically fed to and removed from the means for effecting the reduction of the blocks to circular form in cross-section and the provision of longitudinal central bores therein.

Other objects and advantages of the invention will be fully appreciated from the fol lowing description and claims when taken in connection with the accompanying drawings, forming part of this specification, in which Figure 1 is a vertical longitudinal central section of the machine constituting the prescut and preferred embodiment of my invention. Fig. 1 is an enlarged detail horizontal section illustrating a portion of the mechanism at the left-hand end of the machine. Fig. 2 is an end elevation of the machine. Fig. 3 is a vertical transverse section taken in the plane indicated by the line 3 3 of Fig. 1 looking in the direction indicated by arrow. Fig. 4- is an enlarged detail horizontal section illustrating a portion of the mechanism at the right-hand end of the machine. Fig. 5 is a detail side elevation illustrating the sawteeth at the inner end of the tubular shaft. Fig. 6 is a plan view of the entire machine. Fig. 7 is a central cross-section of the same.

Similar letters designate corresponding parts in all of the views of the drawings, referring to which-- A is the main frame of the machine, which may be of any construction compatible with the purposes of my invention Without involving a departure from the scope thereof. On the said frame is a table B, bearing uprights O, between which the wood blocks to be reduced to circular form and provided With bores are designed to be held, as will herein after be described in detail.

D is a tubular shaft of circular form in cross-section disposed longitudinally of the main frame and journaled in bearings a thereon and having a tubular saw E at its inner end and also having its inner portion extended through one of the uprights C, Fig. 1.

of jam-nuts 1), adjustable on the shaft so as to determine the endwise movements of said shaft relative to the uprights O.

The tubular saw E of the tubular shaft D has for its function to reduce to circular form blocks held between the uprights O, and the purpose of moving the shaft endwise is to feed the saw to and from the block that is being reduced.

H is a shaft extending lengthwise through the tubular shaft D and having its inner end hollow, as indicated by 0, whereby it is enabled to present an edge to and hold the blocks to be reduced against rotation. The said shaft H, which is of course non-rotatable, is provided further with a socket d, which extends longitudinally from the hollow in the end thereof and is designed to prevent dulling of the bit presently described. While the shaft H is non rotatable, as stated, it is designed to be moved endwise in and out through the medium of an arm I, which is adjustably fixed upon it through the medium of jam nuts 6, the jam nuts being preferably employed to attach the arm I in an adjustable manner, so that the endwise movement of said shaft H relative to the uprights C may be readily regulated.

J K are endwise-movable bars guided in the main frame, so as to reciprocate in the direction of the length thereof and bearing the arms G and I, respectively, the said arms be ing preferably secured in an adjustable manner on the respective bars by j am-nuts f for the reason before pointed out. Mounted on the bars J K and fixed by a set-screw to the bar J but movable loosely on the bar K, is a block L, while mounted on the bars J K and.

fixed by a set-screw to the bar K is a block M. 1 inwardly and outwardly from the said shaft These blocks L M each have an antifriction- Q v roller 7L, the roller of the block L being disposed in the groove 01 between the opposed cam-faces of two disks N and the roller of the block M being disposed in the groove between the opposed cam-faces of the disks P. The said disks N and P are fixed on a longitudinal shaft Q, which has a pulley R, designed to be rotated by suitable motive power, and when the said shaft Q is rotated it will be ob served that the bar or shaft H will be moved endwise inwardly and outwardly by the shaft Q through the medium of the disks P, the block M, the bar K, and the arm I, while the tubular shaft D will be moved endwise inwardly and outwardly by said shaft Q through the disks N, the block L, the bar J, and the arm G; also, that by reason of the difference of pitch and the relative arrangement of the cam-grooves t and the endwise movements of the shaft or bar H will be shorter than those of the tubular shaft D and the inward movement of the said shaft or bar H will precede the corresponding movement of the tubular shaft D, while the outward movement of the tubular shaft D will precede the corresponding movement of the shaft or bar H, the latter to assure the block being held by the bar until the tubular saw is withdrawn from said block. From this it follows that the said shaft or bar H will engage and hold a block to be reduced against rotation and the tubular saw will cut or rough the block into circular form in cross-section, after which the saw will move endwise out of engagement with the block, and this movement of the saw will precede the outward endwise movement of the shaft or bar H, after which the released block will be displaced from between the shaft or bar H and the bit by means hereinafter described.

S is an endwise movable and rotatable shaft which is mounted in bearings p in the main frame A and is provided at its inner end with a bit T for boring through the longitudinal centers of the blocks to be reduced and is also provided at an intermediate point of its length with a band-pulley g to receive a belt (not shown) from the motive power employed to rotate the shaft. Fixed on the outer por tion of the shaft, preferably through the medium of jam-nuts r, is an arm T, which is also fixed on an endwise-movable bar or shaft V. This bar or shaft V is arranged alongside another bar or shaft U, and on the two is mounted a block W, having an antifriction roller 8 disposed in the groove t between the opposed cam-faces of two disks X, fixed on the shaft Q. The said block l/V is fixed on the shaft V through the medium of a setscrew or other suitable means and is movable lengthwise of the machine on the shaft U. From this it follows that when the shaft Q is rotated the bit-shaft S will be moved endwise through the medium of the cam X, the block l/V, the shaft V, and the arm T; also, that the said movements of the bit-shaft will be synchronous with the corresponding movements of the tubular saw-shaft D, so as to permit of the proper displacement of a block subsequent to the rounding and boring of the same.

A is a table disposed at one side of the main frame A and fixedly connected thereto through the medium of brackets B. C is an inclined plane extending downwardly from the table A to the table B, before described, and D is a circular saw carried by the table A and having for its purpose to saw a strip of wood into blocks of suitable length to be rounded and bored into spools, cores, and the like. After being cut from the strip mentioned the blocks pass down the inclined plane or way C to the table B and are there engaged by a follower E and pushed to a position between the bit T and the inner end of the bar or shaft H. The said follower E is reciprocated from the shaft Q through the medium of a crank-disk u, fixed on one end of said shaft Q, a shaft w, an arm w, fixed on said shaft and connected to the crank-disk through the medium of a link as, and an arm 1 also fixed on the shaft 4) and connected through a link 2, with the follower E. From this it will be appreciated that the movements of the follower E are properly timed with reference to the movements of the tubular shaft D, the shaft or bar H, and the bit Tthat is to say, the follower will be moved forwardly between the uprights C coincident with the outward movements of said shaft or bar H, tubular shaft D, and bit Tand will be moved rearwardly on the inward movements of said bar or shaft H, tubular shaft D, and bit T. This being so, it will be observed that each block as it is positioned before the follower E will serve first to displace the block preceding it and will then be engaged by the shaft H and the saw E and bit T, the engagement of the shaft or bar H with the block preceding the operations of the saw E and bit T.

It will be gathered from the foregoing that my improved machine is automatic in action and is therefore possessed of high capacity; also, that the machine is simple and compact in construction and embodies no delicate parts such as are liable to get out of order after a short period of use.

I have specifically described the construction and relative arrangement of the elements embraced in the present and preferred embodiment of my invention in order to impart a full, clear, and exact understanding of the said embodiment. I do not desire, however, to be understood as confining myself to such specific construction and relative-arrangement of parts, as such changes or modifications may be made in practice as fairly fall within the scope of my invention as claimed.

Having described my invention, what I claim, and desire to secure by Letters Patent, 1s-

1. In a machine for roughing wood blocks into circular form in cross-section and providing the same with longitudinal bores, the combination of a main frame, a drive-shaft journaled therein, a rectilinearlymovable and rotatable tubular shaft having a tubular saw at its inner end and equipped with means whereby it may be rotated, means intermediate the drive-shaft and said tubular shaft for reciprocating the latter, a rectilinearly movable and non-rotatable shaft disposed in the tubular shaft and having a hollow inner end for holding a block against rotation, means intermediate the drive-shaft and the non-rotatable shaft for reciprocating the latter by the former, a rotatable and rectilinearly-1novable bit opposed to and arranged to enter the hollow inner end of the non-rotatable shaft and equipped with means whereby it may be rotated, guides disposed at right angles to the tubular shaft and the bit; one of said guides being adapted to receive the tubular shaft, and the other guide being adapted to receive the bit, means intermediate the driveshaft and the bit for reciprocating the latter by the former, a follower movable to and fro between the guides and at right angles to the tubular shaft and the bit, and means intermediate the drive-shaft and the follower for reciprocating the latter by the former.

2. In a machine for roughing wood blocks into circular form in cross-section and providing the same with longitudinal bores, the combination of a main frame, a drive-shaft journaled therein and bearing three cams, a rectilinearly-movable and rotatable tubular shaft having a tubular saw at its inner end and equipped with means whereby it may be rotated, a rectilinearly-movable and non-rotatable shaft disposed in the tubular shaft and having a hollow inner end for holding a block against rotation, reciprocatory bars guided in the frame and having arms at their outer ends connected to the tubular shaft and the non-rotatable shaft, respectively, a block fixed on one bar in position to engage one vcam on the drive-shaft and movable loosely on the other bar, a block fixed on such other bar in position to engage a second cam on the drive-shaft and movable loosely on the firstmentioned bar, a rotatable and rectilinearlymovable bit opposed to and arranged to enter the hollow inner end of the non-rotatable shaft and equipped with means whereby it may be rotated, an endWise-movable bar arranged in the main frame and having an arm connected to the bit, a block on said bar engaging a third cam on the drive-shaft, guides disposed at right angles to the tubular shaft and the bit, a follower movable between said guides, and a connection intermediate the drive-shaft and the follower for actuating the latter.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

HENRY J. DUNCAN.

Witnesses:

MARTIN Ln ROY, FRANcIs E. HALL. 

